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Product details
This right-hand rear rotor brings the drilled-and-slotted SRP face to the matching Pontiac GTO disc/drum package. Its 12.19-inch ring is cast with the hat and 7.48-inch parking drum, retaining the 2.310-inch offset required by that assembly. Founded by Bill Wood in 1977, Wilwood designs and manufactures disc brake systems in Camarillo, California. Its range includes calipers, rotors, master cylinders, valves, fittings and lines for motorsport, street performance and specialized applications. Rotor choice belongs within that complete system: the caliper, pad, mounting hardware and intended duty must work together.
Technical Details
- Manufacturer part number: 160-8744-BK
- Quantity: One rotor; not an axle pair
- Outside diameter: 12.19 inches
- Nominal thickness: 0.81 inches
- Rotor material: Iron
- Construction: 32 vanes
- Friction surface: SRP Drilled & Slotted
- Finish: Black Electro Coat
- Approximate weight: 15.80 lb
- Factory burnished: No
- Dynamically balanced: No
- Installation orientation: Right-hand
- Registration / lug inside diameter: 2.76 inches
- Far-side inside diameter: 6.70 inches
- Rotor offset: 2.310 inches
- Internal parking-brake drum diameter: 7.48 inches
- Internal clearance diameter: 6.38 inches
- Mounting-face thickness: 0.21 inches
- Hat wheel-stud clearance pattern: 5 x 4.75 inches
- Wheel-stud clearance hole diameter: 0.52 inches
- Opposite-hand companion rotor: 160-8745-BK (sold separately)
- Intended use and restrictions: Rear rotor for compatible Pontiac GTO kits with an internal parking drum.
The integral hat is part of the rotor; caliper, pads, parking-brake mechanism and installation hardware are separate.
Fitment & Compatibility
Check the existing Wilwood GTO rear kit, 2.76-inch register and five-on-4.75-inch wheel-stud clearance pattern. The rotor does not include parking shoes or the operating mechanism.
Wilwood product specifications · Rotor dimension diagram
For more than 20 years, PMB Performance has helped customers choose brake components. Share the details of your current setup for assistance with rotor selection.
